5
T
T
T
T
287
4r
°
aa
>
4
3+
~
°
>
2b
°
)
Q
°
+
ie
0
Fig, 4—Rate of coalescence
us. V for NaCl crystals at 40
to 55% relative humidity (crys-
_
1
0
|
2
!
4
l
6
i
8
10
tal positive, water negative).
12
Vv
°
3.0L
6
-
So
o
Fig. 5—Rate of coalescence
vs. V for NaCl crystals at
3% (Cl) and 45% (OC) relative
humidity (crystal negative,
water positive).
= 20h
o
7
of
9
1.0
9
0
46
4
¢
0 8A
°
1
5
4
10
l
15
20
Vv
9.0
TT
aol
=
Fig. 6——Rate of wetting of
NaCl crystals at 60 to 65%
relative humidity (L, solid
positive, water negative; x,
solid negative, water posi-
Vt
tive) and at 75% relative
humidity (©, solid positive,
walter negative). The curves
from Figs. 4,5, and 7 to 10
are shoun for comparison.
The denotations are: a, 60
0
ld
0
20
40
60
8.0
jf
10.0 12.0 14.0
v
16.0 18.0 20.0
to 65% relative humidity;
b, 3and 45% relative humidity (solid positive); c, 3
and 45% relative humidity
(solid negative); d, saturated
NaCl solution (solution positive); e, saturated NaCl solution (solution negative).